hg: jdk/client: 8190997: PNGImageReader throws NullPointerException when PLTE section is missing

[jayathirth.d.v at oracle.com]

Changeset: 35b5da568499
Author:    jdv
Date:      2017-12-26 13:38 +0530
URL:       http://hg.openjdk.java.net/jdk/client/rev/35b5da568499

8190997: PNGImageReader throws NullPointerException when PLTE section is missing
Reviewed-by: serb, bpb, pnarayanan

! src/java.desktop/share/classes/com/sun/imageio/plugins/png/PNGImageReader.java
+ test/jdk/javax/imageio/plugins/png/PngPLTEChunkMissingTest.java